However, here are some points to consider:
* "Like" has long been used as a filler word: While the current overuse of "like" is noticeable, it's not a recent phenomenon. Linguists have observed the use of "like" as a filler word in various forms of speech for decades, even going back to the 19th century.
* The rise of "Valley Girl" speak: The 1980s saw a notable increase in the use of "like" as a marker of teenage and youth culture, popularized by the "Valley Girl" stereotype. This likely contributed to the word's broader acceptance and use.
* Influence of media and popular culture: TV shows, movies, and social media have also played a role in perpetuating the use of "like" as a filler word. Characters and influencers often use it, making it more familiar and acceptable.
* Generation-specific trends: Each generation tends to have its own linguistic quirks, and "like" has become a prominent feature of the vocabulary of millennials and Gen Z.
It's important to note that while "like" overuse is often associated with younger generations, it's not exclusive to them. People across age groups use "like" as a filler word, and its prominence can vary depending on regional dialects, social circles, and individual speaking habits.
Instead of pinpointing a specific "start date," it's more accurate to see the overuse of "like" as a gradual linguistic shift, influenced by various social, cultural, and generational factors.